Machine for cutting cardboards for book covers or the like



NOV. 3, 1931. KOLBUS 1,829,937

MACHINE FOR CUTTING CARDBOARDS FOR BOOK COVERS OR THE LIKE Filed Marym 19, 1927 5 Sheets-Sheet 1 m Lawn/v2" NOV. 3, 1931. A KOLBUS 1,829,937

MACHINE FOR CUTTING CARDBOARDS FOR BOOK COVERS OR THE LIKE Filed March 19, 1927 5 Sheets-Sheet 2 Nov. 3, 1931. A. KOLBUS 7 MACHINE FOR CUTTING CARDBOARDS FOR BOOK COVERS OR THE LIKE Filed March 19, 1927 3 Sheets-Sheet 3 llltl Patented Nov. 3, 1931 AUGUST KOL'BUS, OE ESPELKAMP, NEAR RAHDEN, GER-MANY MACHINE FOR CUTTING CARDCBOARI DS FOB BOOK COVER-S OR THE LIKE Application filed March 19, 1927, Serial No.

This invention relates to improvements in a machine for cutting cardboards for book covers and the like, of the kind in which the cardboards when cut into longitudinal pieces are taken up by pairs of rollers and are for a subsequent transverse cutting transversely moved by a conveyor, and the novelty consists in the fact that the latter is put in gear by means of a knee-shaped turnable abutment and adapted to operate a clutch by means of a system of levers, While it is again put out of gear by means of an abutment on said clutch striking against a separate intermediary member. The accompanying drawings illustrate the improved machine by way of example: Fig. 1 is a plan view thereof, Figs. 2 and 3 are respectively a plan view and a perspective view of part of the driving mechanism of the machine, Figs. 4: and 5 show details thereof and Fig. 6 shows the machine in longitudinal section on a larger scale.

The piece of cardboard to be cut is placed upon a table a with its front edge upon a feed-roller b and then cut by rotary cutters 0 into longitudinal strips, which are pushed over a roller 03 to loosely engage between pairs of rollers 6, e 6 until they strike against an abutment f where their advance is stopped. The lower rollers of the said pairs of rollers are connected with the driving mechanism of the machine and in permanent motion while the upper rollers thereof are adjustable to suit any thickness of cardboard used.

Between the rollers (Z and the first pair of rollers e, an angular turnable abutment or trigger g is located and adapted to be'turned by contact with the lon itudinally cut strips of cardboard during t eir advance. Said trigger controls the operation of conveyor h, which shifts the longitudinally cut cardboard laterally at right angles to its previous direction of travel, in the following manner:

The turning-over of the abutment g by 7 means of the longitudinally cut strips of cardboard is transmitted by an arm 2' to a link is and an arm m, which is fixed on the end of a shaft n, from another arm of which a pivoted rod 0 leads to a disengaging lever p. A disengaging contrivance g arranged 176,758, and in Germany January 6, 1927.

on said lever engages in an annular groove 1 of a male clutch member s, that is slidably arranged on an axle t. The female clutch member 14 has a cam a) which is connected by a guiding member to with a toothed sector a: and adapted to set the latter in motion (Fig. 5). The toothed sector w meshes with a toothed wheel y keyed on an axle z. Said axle carries a cord pulley 1 from which an endless cord runs in crossed fashion over the cord pulleys 2, 3. Said cord is'connected with the conveyor h, of which the fingers project through the table 13. As soon as the clutch s, u is engaged by means of the disengaging lever 19, the toothed sector 00 is moved by the cam 12, which movement is transmitted by the toothed Wheel 3 to the cord pulley 1, whereby the conveyor is set in motion. The conveyor fingers bring then the longitudinally cut cardboard to the laterally arranged rotary cutters 4, which transversely cut the latter, the single cut pieces being then collected over the roller 5 by separate containers (not shown). 7

The cam o is so designed that the guiding member w does not engage with the toothed sector 00 until the longitudinally cut cardboard has reached the abutment f. As soon as the toothed sector is moved, it acts upon a spring 6, which is thereby tensioned.

As soon as the conveyor it has supplied the whole longitudinally cut cardboard strips to the rotary cutters 4:, the clutch s,uis again dis engaged by means of an abutment cam 7 bearing against a disengaging cam member 8, the cam 0 also being then disengaged from the guidingmemberw. Thetransverseconveyorh is returned into its initial position by the spring 6 (Figs. 3 and 5) which has been tensioned during the descending of the toothed no sector a; with which it is connected, and after the disengagement of the clutch s, u this spring moves the toothed sector it into its initial position which sector, owing to its meshing with the toothed wheel 11 rotates the 95 shaft 2 with the cord pulley 1. This return movement may be accelerated by a counterweight (not shown). Furthermore, the lever p returns the angular abutment g to its initial position.

As long as the conveyor h is in operation, no fresh cardboard piece can be supplied to the cutters 0. This is attained by the arrangement of arms 9 on the shaft n by which push-rods 10, 11, 12 are pushed in upward direction through the table a thereby blocking the path in front of the cutters c.

To lead off the end strips of unnorm'al cutting width on the right and left of the longitudinally cut cardboard during their advance toward the abutment f, a transverse slot 14 is provided in the table 13 directly behind the abutment g, while on both ends of said slot inclined leading-off members 15 are fixed by 15 means of clamps 16 (Fig. 4'1) against which strike said end strips and are lead off in downward direction through said slot.

What I claim, is

1. In a machine for cutting cardboard for 530 book covers, the combination with two series of cutters, each series being disposed at right angles to the other for cutting the cardboard longitudinally and transversely into smaller pieces, a pair of feeding rolls associated with said first series of cutters, a pair of rollers between which the cardboard pieces coming from said feeding rolls pass during their advance, -a conveyor for transversely moving said longitudinally cut pieces to the second 3 series of cutters, a drive for said cutters and conveyors, a clutch interposed between the drive and said conveyor, and a trip member actuated by the advancing longitudinally cut pieces for operating the clutch.

2. In a machine as specified in claim 1 wherein the clutch includes means for automatically restoring the conveyor and trip to initial position and is disengaged after a predetermined movement.

In testimony whereof I have hereunto set my hand. I

AUGUST KOLBUS. 

